A person standing 140 centimeters from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 14°, while the angle of elevation to the top of the mirror is 13°. Find the vertical dimension of the mirror (see the figure). Round to the nearest centimeters.
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Apply the rules regarding the use of significant digits when determining your answer.
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Vertical dimension of mirror = __________ cm
Fill in the blank(s) with the appropriate word(s).
67
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Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.79 g = ____ oz
A. 35.6 oz B. 2.8 oz C. 2239.7 oz D. 27.7 oz
Provide an appropriate response.What happens if C = 90° when the law of cosines is applied in the form 
What will be an ideal response?
Solve.The temperature on a December morning is -8°F at 3 a.m. If the temperature drops 5° by 4 a.m., rises 7° by 5 a.m., and then drops 4° by 6 a.m., find the temperature by 6 a.m.
A. 10°F B. -10°F C. -24°F D. 24°F
Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
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A. ??(10, 1) B. ?(2, 1) C. ??(2, -6) D. ?(-2, 1) E. ??(2, -1)